Mary Lynn Rajskub is set to work with Amy Adams and Meryl Streep in “Julie and Julia,” presently filming in New York. It’s a true story about Julie Powell (Adams), who spent a year cooking all 524 recipes in Julia Child’s classic cookbook, “Mastering the Art of French Cuisine,” and blogging about her trials and tribulations. Rajskub (“24″) is set to play Powell’s best friend, Helen. The story focuses on Child’s life in France in the 1940s and 1950s, based on her biography. Streep plays Child, and her “The Devil Wears Prada” co-star Stanley Tucci plays her husband, Paul. Nora Ephron is directing.